This 12-minute video lesson looks at how professional antigen presenting cells present …
This 12-minute video lesson looks at how professional antigen presenting cells present parts of engulfed pathogens on MHC II complexes (major histocompatibility complexes). [Biology playlist: Lesson 54 of 71].
This 16-minute video lesson looks at the role of phagocytes in innate …
This 16-minute video lesson looks at the role of phagocytes in innate or nonspecific immunity. It also discusses neutrophils, macrophages, and dendritic cells. MHC II. [Biology playlist: Lesson 51 of 71].
This 15-minute video lesson looks at the role of the sarcoplasmic reticulum …
This 15-minute video lesson looks at the role of the sarcoplasmic reticulum in controlling calcium ion concentrations within the muscle cell. [Biology playlist: Lesson 49 of 71].
This 14-minute video lesson looks at how a sodium potassium pump can …
This 14-minute video lesson looks at how a sodium potassium pump can maintain a voltage gradient across a cell or neuron's membrane. [Biology playlist: Lesson 42 of 71].
This 19-minute video lesson provides an overview of how the nephrons in …
This 19-minute video lesson provides an overview of how the nephrons in the kidney filter blood and reabsorb water and other molecules. [Biology playlist: Lesson 59 of 71].
This 9-minute video lesson looks at tropomyosin and troponin and their role …
This 9-minute video lesson looks at tropomyosin and troponin and their role in regulating muscle contraction. How calcium ion concentration dictates whether a muscle is contracting or not. [Biology playlist: Lesson 48 of 71].
A high-level explanation of digital signature schemes, which are a fundamental building …
A high-level explanation of digital signature schemes, which are a fundamental building block in many cryptographic protocols. Created by Zulfikar Ramzan.
An explanation of cryptographic proof-of-work protocols, which are used in various cryptographic …
An explanation of cryptographic proof-of-work protocols, which are used in various cryptographic applications and in bitcoin mining. Created by Zulfikar Ramzan.
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